Nut-lock.



O. LUYTIES.

NUT LOCK.

APPLIGATION FILED MAR. 12, 1912.

1,052,602, Patented Feb. 11, 1913 B HIHHHH K II 'I], n! l g 5 1 I 04 W /N VENTOR ATTORNLEY I so 'which-- UNI ED STATES, PATENT OFFICE.

orro LUQYTIES, oF NEW YORK, N. Y. j

NUT-LOCK.

Specification of letters Batent. Patented Feb. 11, 1913.

Application filed March 12, 1912. Serial No. 683,264.

1 To all whom it may concern: c

Be it known that L'Or'ro LUYTIES, a citi-f zen of the United States, and-a resident of which looks automatically by abutment" under pressure against an abutting surface.

A further object is to'provide a lock nut which will present when looked a bridge between the nut and nut locking portion.

A further object is to provide a lock nut that can be used as an ordinary nut,'by

breaking the locking portion \from the main body portion of the nut.

A further object is to providea lock nut which looks to the bolt by distorting the thread or changing the pitch of the thread in the lock portion relative to the pitch in the main body portion of the nut.

1 With this and other objects-in View hereinafter set forth, I- refer to the drawings forming a part of this specification, in

Figure l is a general exterior-{view of a lock nut mounted on a bolt and shown in unlocked relation theretii? 'Fig. 2 is a vertical sectional view of the lock nut as it appears when in locked engagement with a bolt.

fFig. 3 is a detail view on an enlarged scale,

illustrating the distortion of the threads produced when the nut is locked in place.

' A and. A indicate two sheets of metal and.

40 Ba bolt to hold them together, which is provided with a threaded shank portion B. C, ,indicates the main body portion of a nut of usual construction, provided with a thread C to fit the thread on the bolt B, and

D, indicates the locking member which is connected integrally at D, thus forming a slot D which extends across the bolt to the portion D. The latter is a short substan- \tially non-resilient connection which is .50 adapted to receive a permanent set when bent. The lock portion D is threaded with a plurality of threads in direct pitch and continuation of the thread C and the outer face D of the lock portion is preferablyan,

5 rangedat a slight angle to that of the face C of the main body portion as shown.

To look the nut, a wrench is placed on the hexagon portion-of the nut C, and the face D forced against the'face ofthe plate A with suflicient force to distort the thread in the lock portion D and to disturb the continuity thereof'with respect to the thread in v the main body portion C. When the .outermost end of the face D touches the abutment, it causes the comparatively .weak con- 5 nection D to yield and the locking portion D swings substantially longitudinally of the bolt until the free endD of this portion touches face O of the body of the nut, re sulting in abridging effect for sustaining 7 the locking portion at its two. ends. F urther movement of the body portion G will,

. result in a substantially bodily movement of the locking portion D toward body portion C. Thus the nut is locked in place by a permanent distortion thereof, which distor-- tion remainsaeven when the nut is backed off from the abutment.

- Referring .to the enlarged detail view shown in Fig. 3 it will be noted that the 0 threads B and B of the bolt, engaging the locking portion D, are distorted with reference to thethreads B and B on either side thereof.- Threads B and B have been shifted bodily downward and sWun to the 35 right as indicated bythe space B etween threads 13 and B and-also by the crowding together of threads B and B Of course, the threads in the locking portion D are similarly distorted. It will be seen, therefore, that. in the above construction, the nut screws on easy andv locks automatically by jamming against the abutment, without the aid of any special device outside the nut itself: Moreover, when once looked it offers a permanent resistance toward being unscrewed, which resistance continues even a after thefnut is backed ofi' from the abutment.

Having thus described my invention, I claim as new 1. A, look nut comprising a body portion and a lock portion connected thereto at one side. thereof by va narrow strip of metal. which holds the adjacent faces of the body portion and lock portion apart a predetermined distance from each other, said lock portion having its outer face normally inclined at an angle to that of the median line across. the body portion, said body portion 310 and lock portion having a thread. of uniform and continuing pitch relative to each other.

- body portion, 1

. having a thread of uniform and continuingpitch relative to each other.

2. A look nut comprising'a body portion and a lock portion connected thereto at one side thereof by a narrow strip of metal which holds the adjacent faces of the body portion and lock portion apart a predetermined distance from each other, said lock portion having its outer face normally inclined at an angle to that of the median line across the and the inner adjacent plane surfaces being formed parallel ,with each other, said body portion and lock portion 3. A lock nut comprislng a body portion and a lock portion connected thereto at one side thereof by a narrow strip of'metal and formed integral which holds the adjacent faces. of the body portion and lock portion apart a predetermined distance from each other, said lock portion having its outer face normally inclined at an an le to that of the median line across the bo d body portion and lock portion having a thread of uniform and continuing pitch relative to each other.

4. A look nut comprising a body portion and a locking portion, a short substantially non-resilient connection between the'body portion and locking portion, said connection being yieldable substantially. longitudinally y portion, said.

of the geometrical axis of the nut, said portions having normally a continuous thread .adapted to easily screw on a bolt.

5. A- look nut comprising 'a body portion and a locking portion, a short substantially non-resilient connection for said portions located at one side thereof, said connection being yieldable substantially longitudinally of the axis of the bolt, said portions having normally a continuous thread adapted to easily screw on a bolt.

'6. A'lock nut comprising a body portion and a locking portion, a yielding substantially non-resilient non-threaded connection between the body portion and locking portion, said'portions having normally a con- .tinuous thread adapted to easily screw on a bolt, said locking portion having fewer threads than said body-portion and adapted to be distorted by the comparatively larger force which is transmitted by 4 said body portion.

Signed at New York city, in the county of New York and State of New York, this 6th day of March, A. D. 1912.

, OTTO LUYTIES.

Witnesses:

FRANK M. ASHLEY, MANUAL M. Vorr. 

